docs: def set_admin(email):
      '''Set an user as administrator'''
      user = datastore.get_user(email)
      log.info('Adding admin role to user %s (%s)', user.fullname, user.email)
      role = datastore.find_or_create_role('admin')
      datastore.add_role_to_user(user, role)
      success('User %s (%s) is now administrator' % (user.fullname, user.email))